Synonyms: (e,e)-dienestrol;4,4’-(diethylideneethylene)di-,trans-,(e,e)-pheno;alpha-dienestrol;CYCLADIENE;3 4-BIS(P-HYDROXYPHENYL)-2 4-HEXADIENE;4,4'-DIHYDROXY-GAMMA,DELTA-DIPHENYL-BETA,DELTA-HEXADIENE;3,4-Bis(4-hydroxyphenyl)-2,4-hexadiene;Dehydrostilbestrol;4,4'-hexa-2,4-diene-3,4-diyldiphenol;4,4'-(2E,4E)-hexa-2,4-diene-3,4-diyldiphenol;4,4'-(2Z,4Z)-hexa-2,4-diene-3,4-diyldiphenol